3747090

Information

• Patent Grant
• 3747090

• References
• Source

• Patent Number

  3,747,090

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1973
  50 years ago

• CPC

  • G06C7/06 - with one set of keys for each denomination

• US Classifications

  • 341 - Coded data generation or conversion
  • 178 - Telegraphy
  • 400 - Typewriting machines